The trippy, candy-bright shades of this mountain look like a scene from The Wizard of Oz once it flipped into Technicolor. But it is indeed real - and you can climb it. If you do take on the challenging hike, choose a sunny day when the colours will be at their most vivid. You will also need to acclimatise to the high altitude - the peaks rise up to more than 16,000ft - by being in this mountainous region for a full 48 hours beforehand. On the trek look out for the seven types of camelids that are native to this place, and if the skies are clear you might also see one of world's largest birds gracefully riding the thermals with their enormous 10ft wings. One ancient civilisation named this region of hilltop temples and sacred valleys the bellybutton of the world. Ruthless conquerors later made their mark with grand colonial buildings and solemn religious rituals. More recently the area has drawn backpacked visitors keen to hike the cloud forests and alpine tundra. But this kaleidoscopic peak is still very much under the radar.